/Engine/Source/Runtime/CoreUObject/Public/Misc/PackageName.h
Queries all of the root content paths, like "/Game/", "/Engine/", and any dynamically added paths
static void QueryRootContentPaths ( [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & OutRootContentPaths, bool bIncludeReadOnlyRoots, bool bWithoutLeadingSlashes, bool bWithoutTrailingSlashes )